Subchannel Allocation with Nash Bargaining Solutions for Delay Sensitive Traffic in OFDMA Networks

Hui DENG  Xiaoming TAO  Youzheng WANG  Jianhua LU  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.4   pp.1110-1113
Publication Date: 2011/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.1110
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
subchannel allocation,  OFDMA,  Nash bargaining solution,  delay sensitive traffic,  

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Efficient resource allocation for delay-sensitive traffic, such as telephony and video streaming, in Orthogonal Frequency Division Multiple Access (OFDMA) networks is needed to increase system performance. In our system, users try to achieve a low queuing delay and buffer space usage by competing for transmission over the subchannels. We formulate this problem as a bargaining game and use the Nash Bargaining Solution (NBS) to realize a fair and efficient subchannel allocation for the users. Simulation results show performance improvements, with regard to packet dropping and delay distribution, over other algorithms.